CN210358574U - Integrated pressure die - Google Patents
Integrated pressure die Download PDFInfo
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- CN210358574U CN210358574U CN201921194259.9U CN201921194259U CN210358574U CN 210358574 U CN210358574 U CN 210358574U CN 201921194259 U CN201921194259 U CN 201921194259U CN 210358574 U CN210358574 U CN 210358574U
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Abstract
The utility model relates to a steel wire drawing technical field, concretely relates to an integral type pressure die, including lubricating the slip form, drawing die and integral type die sleeve, the integral type die sleeve is inside to be equipped with the die cavity of assembling lubricating the slip form and drawing die, the drawing die spacing portion of spacing drawing die still is equipped with in the die cavity of integral type die sleeve; the lubricating die and the wire drawing die are assembled in a die cavity of the integrated die sleeve through hot assembly, the lubricating die and the wire drawing die are coaxially arranged, the lubricating die is positioned at a wire inlet end of the wire drawing die, and a pressure die cavity is formed between a wire outlet end of the lubricating die and the wire inlet end of the wire drawing die. This device adopts the integral type die sleeve, can avoid the die sleeve risk of seeping water, and the die sleeve adopts the hot charge with moist slipform and wire drawing die, connects closely, and the radiating effect is good, simple structure, and the clearance is conveniently dismantled to the convenient whitewash, and whitewash is even and efficient.
Description
Technical Field
The utility model relates to a technical field is drawn to the steel wire, concretely relates to integral type pressure mould.
Background
The drawing process is an important link of steel wire production, and directly influences the production efficiency and the performance of the steel wire. High speed drawing of steel wire requires that both the surface of the drawn steel wire and the working surface of the die have good lubrication conditions. The friction between these two surfaces has a significant influence on the wire drawing process. Because of the influence of friction force, the stress on the cross section of the drawn steel wire is in an uneven distribution state, so that it is difficult to obtain the mechanical property, accurate size and smooth surface necessary for high-quality steel wire products. It can be seen that the friction is an important factor influencing the wire drawing process, and the reduction of the friction during drawing becomes one of the ways to improve the performance of the steel wire product.
The drawing of steel wire divides and draws roughly, well drawing and wet drawing, draws the link in the well of steel wire, and drawing of steel wire is gone on in dry powder wire drawing equipment, and dry powder wire drawing equipment is one of wire drawing equipment, and it adopts dry lubricating powder as wire drawing lubricating material, and traditional dry powder wire drawing equipment's tungsten steel mould is the single mode, and the wire drawing in-process is cooled off the single mode outside by recirculated cooling water, but the product is lubricated inadequately when drawing, causes the finished product quality after the wire drawing not high.
Experimental research shows that when a pressure die (namely a lubricating die and a wire-drawing die are used in combination) is used for drawing the steel wire, because the lubricant is lubricated in a pressure state, compared with the traditional wire-drawing die, the friction factor is reduced when the same lubricant is used, the drawing stress is reduced, and the mechanical property of the drawn steel wire is also obviously improved. The pressure dies disclosed in the prior art have various forms, but all have some defects, which are mainly summarized as follows: firstly, some existing pressure dies are combined pressure dies, although the steel wire drawing lubrication condition is improved to a certain extent, the sealing mode of an external die sleeve is unreliable, water seepage is easy to occur, and in the actual use process of a workshop, the condition that the die is cracked due to water seepage can occur, so that the surface of the steel wire is damaged, products are scrapped, the production line is stopped, the continuous production of enterprises is influenced, and the production efficiency is reduced; secondly, some existing pressure dies are installed by adopting a die core, a spacer bush and a die sleeve, but because the die and the spacer bush are not tightly installed, heat dissipation is difficult, and the wire drawing powder in a pressure die cavity can be coked; thirdly, some existing pressure dies are complex in structure and inconvenient to assemble and disassemble, labor intensity is high during die replacement, production efficiency is affected, and die cleaning is inconvenient; fourthly, the existing pressure die is not provided with a horn mouth or the horn mouth at the position of the lubricating die outlet for carrying the powder is smaller, so that the pressure die cavity formed at the position of the lubricating die outlet and the position of the wire-drawing die inlet is smaller, on one hand, the time for lubricating the steel wire surface by the lubricating powder in the flow state at high temperature and high pressure is short, on the other hand, the flow for flushing the steel wire is difficult to form in the pressure die cavity, the steel wire surface cannot be fully contacted with the lubricating powder in the flow state, the powder coating is incomplete, the efficiency is low, and the final result is that the lubrication on the steel wire surface is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem that above-mentioned exists with not enough, provide an integral type pressure mould, it adopts the integral type die sleeve, can avoid the die sleeve risk of seeping water, and the die sleeve adopts the hot charge with moist slipform and wire drawing die, connects closely, and the radiating effect is good, simple structure, and the clearance is conveniently dismantled, and the dusting is even and efficient.
In order to achieve the purpose, the adopted technical scheme is as follows:
an integrated pressure die comprises a lubricating die, a wire drawing die and an integrated die sleeve, wherein a die cavity for assembling the lubricating die and the wire drawing die is arranged in the integrated die sleeve, and a wire drawing die limiting part for limiting the wire drawing die is also arranged in the die cavity of the integrated die sleeve; the lubricating die and the wire drawing die are assembled in a die cavity of the integrated die sleeve through hot assembly, the lubricating die and the wire drawing die are coaxially arranged, the lubricating die is positioned at a wire inlet end of the wire drawing die, and a pressure die cavity is formed between a wire outlet end of the lubricating die and the wire inlet end of the wire drawing die.
According to the integrated pressure die, the wire-drawing die limiting part is a flange arranged on the inner side of the integrated die sleeve.
According to the integrated pressure die, the end face of the wire outlet end of the lubricating die is in contact with the end face of the wire inlet end of the wire drawing die, and the end face of the wire inlet end of the wire drawing die is used for limiting the axial position of the lubricating die.
According to the integrated pressure die, the diameter of the inner hole of the lubricating and sliding die is 0.3-0.7 mm larger than the diameter of the inlet wire.
According to the integrated pressure die, a pressure die cavity which is integrally rhombic is formed between the wire outlet end of the lubricating die and the wire inlet end of the wire drawing die, and when the integrated pressure die is in a working state, the wire drawing powder which is in a flow state under high temperature and high pressure in the pressure die cavity can form flowing of scoured steel wires along the side wall of the pressure die cavity.
According to the integrated pressure die, the wire outlet end of the lubricating die is gradually reamed, the starting position of the wire inlet end of the wire drawing die is arranged to be a stepped hole, the tangent extension line of the lowest end of the gradually reamed hole of the wire outlet end of the lubricating die is intersected with the annular bottom surface of the large hole of the stepped hole, and the annular bottom surface of the stepped hole provides a transverse flow guide surface for flowing wire drawing powder so that the flowing wire drawing powder can form flowing of scouring steel wires.
According to the integrated pressure die, the small hole of the stepped hole is in transitional connection with the horn-shaped hole tapered at the rear end of the stepped hole.
According to the integrated pressure die, the diameter of the gradually-expanding hole port of the lubricating die is equal to the diameter of the gradually-reducing drawing-shaped hole port of the wire-drawing die.
According to the integrated pressure die, the wire outlet end of the lubricating die is provided with a tapered hole, and the wire inlet end of the lubricating die is provided with a tapered trumpet-shaped hole.
According to the integrated pressure die, the outlet cone angle of the lubricating die is controlled to be 60-90 degrees, and the outlet cone height is 7-8 mm.
The utility model discloses an integral type pressure mould's beneficial effect:
the integrated pressure die adopts the integrated die sleeve, the wire-drawing die and the lubricating die are sequentially hot-assembled in the die cavity, the lubricating die and the wire-drawing die are completely wrapped by the integrated die sleeve, the cooling of the pressure die is realized by introducing circulating cooling water outside the integrated die sleeve, and the integrated die sleeve is arranged integrally, so that the water leakage risk does not exist, the working safety of the pressure die is higher, and the occurrence of die explosion accidents can be avoided; in addition, because the wire-drawing die and the lubricating die are both arranged in the integrated die sleeve in a hot charging mode, the lubricating die and the wire-drawing die are in close contact with the integrated die sleeve, so that heat generated in the wire-drawing die and the lubricating die can be conducted in time, and the phenomenon that the quality of a product is influenced by coking of wire-drawing powder due to accumulation of heat in a pressure die cavity is avoided;
the inner hole diameter of the lubricating slip form is larger than the wire inlet diameter by 0.3 mm-0.7 mm, namely the minimum inner hole diameter of the lubricating slip form is larger than the wire inlet diameter by 0.3 mm-0.7 mm, in the range, the heat generated by the steel wire in the lubricating die is less, and the proper amount of wire drawing powder at the front end of the die box can be conveniently brought into the pressure die cavity, so that the steel wire achieves better powder coating amount and powder coating efficiency;
the utility model discloses an integral type pressure die, when integral type pressure die is in operating condition, the high temperature high pressure in the pressure die intracavity is the flow that the wire drawing powder that is the flow state can form along the lateral wall of pressure die cavity and erode the steel wire, and can make the wire drawing powder of flow state form the vortex flow at the pressure die cavity, can make the steel wire surface evenly scribble the powder, can find out from the test of workshop scene, the state of the wire drawing powder of taking out of the leading-out terminal of wire drawing die, become the likeliness from original cotton, the color and luster of steel wire becomes grey from original shining, the lubricated situation of explanation steel wire is obviously improved;
the utility model discloses an integral type pressure die is seen at experimental tracking result, and this pressure die's use can prolong mould life, and single specification mould consumes 60% of decline, under promoting the force-feed lubrication condition, product quality also obtains guaranteeing, and finished steel wire color and luster is also better than single mode form's tungsten steel mould and modular mold.
Drawings
Fig. 1 is a schematic structural view of the integrated pressure die of the present invention.
Fig. 2 is a die wear contrast diagram of the integrated pressure die of the present invention and a conventional single-die type tungsten steel die.
FIG. 3 is a comparison graph of the color of the steel wire produced by the tungsten steel mold of the integrated pressure mold and the traditional single mold.
In the figure: 1-integral die sleeve, 2-wire drawing die limiting part, 3-lubricating die, 4-wire drawing die and 5-pressure die cavity.
Detailed Description
The court car for the bilateral expansion mobile office of the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-3, the embodiment discloses an integrated pressure die, which includes a lubricating die, a wire drawing die 4 and an integrated die sleeve 1, wherein a die cavity for assembling the lubricating die 3 and the wire drawing die 4 is arranged inside the integrated die sleeve 1, in the embodiment, the lubricating die 3 and the wire drawing die 4 are arranged in a cylindrical shape with the same outer diameter, the die cavity is a cylindrical hole, the integrated die sleeve 1 is simple in shape and convenient to machine and manufacture, and the size and tolerance of the integrated die sleeve are also well controlled, the wire drawing die 4 and the lubricating die 3 are sequentially arranged in the die cavity, the end face of the wire outlet end of the lubricating die 3 is in contact with the end face of the wire inlet end of the wire drawing die 4, the end face of the wire inlet end of the wire drawing die 4 is used for limiting the axial position of the lubricating die 3, and the assembly and disassembly of the wire drawing die 4; the front end surface of the lubricating and sliding die 3 is flush with the front end surface of the integrated die sleeve 1, so that the die sleeve is not excessively long, otherwise, the die sleeve is not placed in a die box of a machine; a wire-drawing die limiting part 2 for limiting a wire-drawing die 4 is also arranged in the die cavity of the integrated die sleeve 1, and in the embodiment, the wire-drawing die limiting part 2 is a flange arranged on the inner side of the integrated die sleeve 1; of course, in other embodiments, the wire-drawing die limiting part 2 may also be another stopper arranged inside the integrated die sleeve 1 or a stepped hole arranged inside the integrated die sleeve 1; the lubricating die 3 and the wire drawing die 4 are assembled in the die cavity of the integrated die sleeve 1 through a hot-assembling process, the lubricating die 3 and the wire drawing die 4 are coaxially arranged, the lubricating die 3 is located at a wire inlet end of the wire drawing die 4, and a pressure die cavity 5 is formed between a wire outlet end of the lubricating die 3 and a wire inlet end of the wire drawing die 4.
The hot charging process method of the lubricating die 3 and the wire drawing die 4 comprises the following steps:
the integrated die sleeve of the semi-finished product is placed on a working table station, an electromagnetic inductor power supply is started to preheat, the heating temperature is kept within the range of 400-500 degrees, the expansion and contraction principle is utilized to continuously heat for 10-60 s, the inner cavity of the die sleeve is larger than the inner cavity of the original unprocessed state of the die sleeve, then a wire drawing die 4 and a lubricating die 3 are sequentially placed in the inner cavity of the integrated die sleeve in the heating post state, the integrated pressure die combined by a clamp is taken out of an electromagnetic induction heater and placed on a cooling working table surface to be naturally cooled, the wire drawing die 4 and the lubricating die 3 are inlaid in the integrated die sleeve after being naturally cooled by the expansion and contraction principle, and an integrated pressure die finished product is obtained.
Wherein, the difference between the inner diameter of the integral die sleeve to be heated and the outer diameters of the lubricating die 3 and the wire-drawing die 4 is 0.05-0.1 mm.
When the production line is shut down, need clear up the wire drawing powder of moist slipform 3 and 4 inner chambers of wire drawing mould and when repairing moist slipform 3 and wire drawing mould 4, need arrange integral type pressure mould in a hollow stand upper portion, and make the inlet wire end of integral type pressure mould down, then heat integral type die sleeve 1, moist slipform 3 and wire drawing mould 4 just fall down in automatic through hollow stand, in addition in the heating process, integral type die sleeve 1, the wire drawing powder that needs the clearance in lubricated mould 3 and the wire drawing mould 4 also can be owing to melting and automatic the droing, do not need in addition to clear up.
In this embodiment, the material of the integral die sleeve 1 is 45 # steel, the material of the die holders of the lubricating die 3 and the wire-drawing die 4 is 45 # steel, and the material of the die cores of the lubricating die 3 and the wire-drawing die 4 is cemented carbide. The No. 45 steel is simple and easy to obtain, and is beneficial to controlling the cost. In addition, in the embodiment, the lubricating slip form 3 and the wire drawing die 4 are used for processing and assembling wet drawing dies of different types of the steel wire wet drawing link into an integrated pressure die and then applying the integrated pressure die to the steel wire, and are used for a rough drawing link, so that the application range of the wet drawing dies is wider, the types of dies used in a workshop can be reduced, even if the same die is worn, the same die can be continuously used in a plurality of subsequent links through grinding processing, the service cycle of the same die can be prolonged, the using amount of the die is greatly reduced, the production cost is reduced, and as the wet drawing die of the lubricating slip form 3, the service life of the wet drawing die can be longer because the wet drawing die does not participate in drawing.
In this embodiment, the diameter of the inner hole of the lubricating die 3 is preferably 0.3mm to 0.7mm larger than the diameter of the inlet wire, and in this range, the steel wire running in a straight line can conveniently bring a proper amount of wire drawing powder at the front end of the die box into the pressure die cavity 5, so that the steel wire achieves better powder coating amount and powder coating efficiency.
In this embodiment, on the basis of the above scheme, more preferably, a pressure die cavity 5 that is diamond-shaped as a whole is formed between the wire outlet end of the lubricating die 3 and the wire inlet end of the wire drawing die 4, when the integrated pressure die is in an operating state, because the drawing action of the steel wire generates a large amount of heat, the temperature in the pressure die cavity is at least 200 degrees, the environment in the pressure die cavity 5 is a high-temperature high-pressure environment, the flowing wire drawing powder that is in a flowing state under the high-temperature high-pressure in the pressure die cavity 5 can form the flowing of the scouring steel wire along the side wall of the pressure die cavity 5, and the wire drawing powder on the surface of the steel wire is more uniform and has enough thickness through the.
In order to enable the side wall of the pressure die cavity 5 to form the flow of the scoured steel wire, the wire outlet end of the lubricating die 3 can be set to be gradually expanded, the initial position of the wire inlet end of the wire drawing die 4 is set to be a stepped hole, the tangent extension line of the lowermost end of the gradually expanded hole of the wire outlet end of the lubricating die 3 is intersected with the annular bottom surface of a large hole of the stepped hole, and the annular bottom surface of the stepped hole provides a transverse flow guide surface for the fluid-state wire drawing powder so as to form the flow of the scoured steel wire, meanwhile, the fluid-state wire drawing powder can form vortex flow in the pressure die cavity 5 due to the resistance of the flow guide surface and the change of the pressure in the pressure die cavity 5, so that the; the aperture of step hole and the tubaeform hole transitional coupling of its rear end convergent in this embodiment, the leading-out terminal of lubricated mould 3 sets up to the bell mouth of gradually expanding, and its inlet wire end sets up to the tubaeform hole of convergent, and the inlet wire end of lubricated mould 3 sets up to the tubaeform hole that the convergent hole can form wedge effect in the inner chamber of lubricated mould 3, makes the steel wire produce pressure lubrication's effect.
As shown in fig. 2-3, for the pressure die cavity 5 of this type, the workshop also performs a tracking use test in the rough drawing process, and performs a finishing analysis on the experimental data, wherein in the middle drawing phi 2.30-phi 1.15(8 passes) pressure die test, the die consumption per ton of steel wire is reduced by more than half compared with the originally adopted tungsten steel die in single mode, and the die change period is also changed from originally 4 days to 8 days, as shown in the following table:
| die set | Yield of the product | Amount of mold used | Module consumption (one hundred tons) |
| Pressure mould | 49.275 | 8 | 16.24 |
| Tungsten steel die | 40.00 |
The finished wire is also better in color than single-mode tungsten steel dies and modular dies, wherein the finished wire has the following pairs of rejects:
| yield of the product | Number of wheels to be taken down | Number of defective products | Reject ratio (wheel/thousand) | |
| Pressure mould | 49.275 | 67 | 0 | 0.00 |
| Tungsten steel die | 3.00 |
The test that uses this integral type mould to carry out, the defective work quantity of product is zero, and in a word, product quality obviously promotes, though the wire drawing powder quantity increases slightly, wire drawing powder low price, and the manufacturing cost of finished steel wire drops greatly on the whole, so recommends to continue to popularize and try in other workshop sections.
In this embodiment, specifically, the outlet cone angle of the lubricating die 3 is controlled to be 60-90 degrees, the outlet cone height is 7-8mm, the ratio of the diameter of the inlet end of the trumpet-shaped hole of the lubricating die to the diameter of the outlet end of the outlet cone of the lubricating die is 0.59-0.68, the diameter of the port of the conical hole of the lubricating die 3 is equal to the diameter of the port of the tapered trumpet-shaped hole of the wire-drawing die 4, and the ratio of the diameter of the inlet end of the trumpet-shaped hole of the wire-drawing die 4 to the diameter of the outlet end of the trumpet-shaped hole of the wire-drawing die 4 is 8.6-9.0, so that the pressure of the flowing wire-drawing powder in the pressure die cavity continuously changes, thereby.
In order to enable the side wall of the pressure die cavity 5 to form the flowing of the scoured steel wire, the tapered opening of the outlet end of the lubricating die 3 needs to be large enough to form a large pressure die cavity 5 with the inlet end of the wire drawing die 4, so that the steel wire can be sufficiently lubricated at the position, and an even and thick wire drawing powder layer is generated on the surface of the steel wire, so that the friction force can be reduced as much as possible in the drawing process, a proper amount of wire drawing powder can be taken out from the outlet of the wire drawing die 4, the taken wire drawing powder is white powder, and the surface quality of a steel wire finished product is effectively improved.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the above specific embodiments without departing from the scope of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention.
Claims (10)
1. An integrated pressure die, comprising:
lubricating the slip form;
drawing a wire die; and
the integral die sleeve is internally provided with a die cavity for assembling the lubricating die and the wire-drawing die, and the die cavity of the integral die sleeve is also internally provided with a wire-drawing die limiting part for limiting the wire-drawing die;
the lubricating die and the wire drawing die are assembled in a die cavity of the integrated die sleeve through hot assembly, the lubricating die and the wire drawing die are coaxially arranged, the lubricating die is positioned at a wire inlet end of the wire drawing die, and a pressure die cavity is formed between a wire outlet end of the lubricating die and the wire inlet end of the wire drawing die.
2. The integrated pressure die according to claim 1, wherein the wire-drawing die restraining portion is a flange provided inside the integrated die case.
3. The integrated pressure die according to claim 1, wherein an outlet end surface of the lubricating die is in contact with an inlet end surface of the wire-drawing die, and the inlet end surface of the wire-drawing die is used for limiting the axial position of the lubricating die.
4. The integrated pressure die of claim 1, wherein the inner hole diameter of the lubricating die is 0.3mm to 0.7mm larger than the incoming wire diameter.
5. The integrated pressure die of claim 1, wherein an integrally rhombic pressure die cavity is formed between the outlet end of the lubricating die and the inlet end of the wire-drawing die, and when the integrated pressure die is in an operating state, the flowing wire-drawing powder in the pressure die cavity can form a flow for scouring the steel wires along the side wall of the pressure die cavity.
6. The integrated pressure die as claimed in claim 5, wherein the outlet end of the lubricating die is provided with a gradually-enlarged hole, the starting position of the inlet end of the wire-drawing die is provided with a stepped hole, the tangent extension line of the lowest end of the gradually-enlarged hole of the outlet end of the lubricating die intersects with the annular bottom surface of the large hole of the stepped hole, and the annular bottom surface of the stepped hole provides a transverse flow guiding surface for the flowing wire-drawing powder to form a flow for scouring steel wires.
7. The integrated pressure die of claim 6, wherein the small bore of the stepped bore is transitionally connected with a flared bore tapered at its rear end.
8. The integrated pressure die of claim 7, wherein the diverging bore port diameter of the slip die is equal to the progressively converging drawn bore port diameter of the wire-drawing die.
9. The integrated pressure die of claim 6, wherein the outlet end of the slip die is provided as a tapered, tapered hole and the inlet end thereof is provided as a tapered, flared hole.
10. The integrated pressure die according to claim 9, wherein the exit cone angle of the lubricating die is controlled to be 60-90 degrees and the exit cone height is 7-8 mm.
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| CN201921194259.9U CN210358574U (en) | 2019-07-27 | 2019-07-27 | Integrated pressure die |
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| CN201921194259.9U CN210358574U (en) | 2019-07-27 | 2019-07-27 | Integrated pressure die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238221A (en) * | 2019-07-27 | 2019-09-17 | 河南恒星科技股份有限公司 | Integrated pressure mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238221A (en) * | 2019-07-27 | 2019-09-17 | 河南恒星科技股份有限公司 | Integrated pressure mould |
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